Pressure grease gun filler



March 24,1942 D. w. HULTGREN ETAL PRESSURE GREASE GUN Filed J uneV 20 ,v 1940 DA v/D wlw/ TGREN HERBERT WILL/AMS Patented Mar. 24, 1942 PRESSURE GREASE GUN FILLER David W. Hultgren and Herbert Williams, Bozeman, Mont.

Application June 20, 1940, Serial No. 341,560

1 Claim. (Cl. 221-47.5)

This invention relates to a pressure grease gun ller, and has for one of its objects the production of a simple and e'lcient device for facilitating the filling of grease guns, wherein the device may be operated with a minimum amount of inconvenience.

A further object of this invention is the production of a simple and efficient pressure grease gun filler which may be operated in an upright position and the parts of which may be readily assembled or may be separated for the purpose of cleaning or replacement.

Other objects and advantages of the present invention will appear throughout the following specification and claim.

In the drawing- Figure 1 is a side elevational view of the filler, certain parts being shown in section;

Figure 2 is a vertical sectional View, certain parts being shown in elevation;

Figure 3 is a side elevational view of the grease gun plunger constituting part of, and detached from, the grease gun shown in Figure 2;

Figure 4 is a fragmentary side elevational view partly in section of the ller showing a part of a grease gun and ller tube in section;

Figure 5 is a side elevational View of the grease gun nozzle detached from the grease gun shown in Figure 4;

Figure 6 is a side elevational View of one of the smaller sized nozzles detached from the filler.

By referring to the drawing, it will be seen that I designates the barrel or container which is externally threaded, as at II and I2, at each end of the container. A cap I3 is threaded upon the upper end of the container I0, at II, and this cap I3 carries a threaded plunger I4 which is threaded through the cap I3. A right-angularly extending crank or handle I is carried by the upper end of the plunger I4, and a piston I6 is carried by the lower end of the plunger I4. The piston I6 works in the barrel or container I0, as shown in Figure 2.

The lower end of the container I0 is threaded into a base II, which base I'I is supported by legs I8. The base is provided with a right-angle discharge elbow I9 which has threaded engagement with the base I1 and extends laterally therefrom. A tube I9a of suitable size to t the desired grease gun is threaded upon the elbow I9 and the outer end thereof is normally closed by a closure cap when the device is not in use, to prevent the entrance of dust and dirt and also to prevent the grease from leaking out of the tube IBa. The

yby the numeral 2| in Figure 2, the cap and plunger 22 thereof, shown in Figure 3, are removed and the gun 2I is inserted over the open outer end of the tube |95. Then by rotating the plunger I4 toward the right to feed the piston I6 downwardly, the grease in the container I0 will be forced through the discharge tube 19a thereby lling the gun 2|, the gun being forced outwardly toward the outer end of the tube I9L as the gun 2I is lled.

When filling the gun of the type designated at 24, in Figure 4, the nozzle 25, shown in Figure 5, is removed and the open end of the gun 24 is inserted over the open end of the tube I9, the ejector plunger 26 being moved to its most retracted position. As the gun 24 is filled, the gun will move in the direction of the arrow to the dotted line position.

Due to the fact that the container ID is open at both ends andl threaded, the container may be easily detached from the base I'I for relling and the cap I 3,may be easily and quickly attached to or removed from the upper end of the container I 0. Furthermore, no special support is necessary for the ller, since the legs I8 may be set upon a bench, the ground, or any other convenient place, and the device will then be ready for operation and need not be bolted down or anchored. The threaded plunger I4 passing through the cap I3 also provides a seal to prevent dirt and dust from entering the container I0. The crank I5, at the upper end of the plunger I4, may be used to advantage as a handle when carrying the device from place to place. The tube I 9a is of a size to snugly t within the conventional gun and the grease will not be likely to spill or run out while lling the gun in warm weather even if the grease is light enough to flow.

It should be understood that certain detail changes in the mechanical construction may be employed without departing from the spirit of the invention, so long as such changes fall within the scope of the appended claim.

Having described the invention, what we claim 1s:

A pressure grease gun ller of the class described comprising a container open at both ends, a cap for closing one end, a plunger carried by the cap and adapted to eject grease from the opposite end of the container, a base, said container tting on said base, legs for supporting the base, a grease gun lling tube depending from said base and hung between said legs and having a right-angularly extending end terminating Within the contour of the base and container, an extension tube detachably secured to said right-angularly extending end and adapted to receive a grease gun for facilitating the forcing of grease into the gun from said tube and said extension tube, the right-angularly extending end of the rst mentioned tube being shielded within the contour of the base and container in a manner whereby the rst mentioned tube will be protected against contact with foreign objects while the device is not being used and after the extension tube has been disconnected.

DAVID W. HULTGREN.

HERBERT WILLIAMS. 

